import turtle
turtle.color('red','yellow')
turtle.pensize(8)
turtle.begin_fill()
turtle.forward(300)
turtle.right(144)
turtle.forward(300)
turtle.right(144)
turtle.forward(300)
turtle.right(144)
turtle.forward(300)
turtle.right(144)
turtle.forward(300)
turtle.end_fill()
turtle.done()